In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
No mains on one pipe counterflow system - what about a large vent on the radiator?
There are no main vents in my system so I'm experimenting a bit. I installed adjustable Maid-o-Mist vents on a couple of our downstairs radiators and have them running with the largest orifice. The radiators get HOT all the way across within minutes of the boiler steaming. I've been running it all day (working from home today) and I haven't seen a single problem so far, and I like how quickly these radiators are heating. The large vents are allowing the mains in the basement to quickly fill with steam which is also helping the upstairs radiators get hot when needed (the upstairs radiators don't run as much because I have them cranked down with TRV's so the bedrooms stay cool).
I recall you guys saying that large vents on radiators are a bad idea but I really like the way the system is running with them. Is there anything I should be watching for to make sure everything is ok?